Earthquake with magnitude of ML 0.7 on date 17-02-2012 and time 20:32:43 (Italy) in region 8 km SE Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 8 km SE Norcia (PG), on

  • 17-02-2012 19:32:43 (UTC)
  • 17-02-2012 20:32:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7320, 13.1480 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 8 4957 4957
Accumoli RI 9 667 5624
Cascia PG 11 3217 8841
Cittareale RI 13 482 9323
Arquata del Tronto AP 13 1178 10501
Amatrice RI 16 2657 13158
Poggiodomo PG 18 117 13275
Castelsantangelo sul Nera MC 18 281 13556
Monteleone di Spoleto PG 18 599 14155
Preci PG 19 724 14879
Montegallo AP 20 523 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
45 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
92 Km W of Pescara (121014 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
94 Km W of Chieti (51815 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.4
ML 0.7
2012-02-17
19:32:43
42.732 13.148 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1341309
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-02-17 19:32:43 ± 0.28
Latitude 42.7320 ± 0.0036
Longitude 13.1480 ± 0.0073
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1341309

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.17087
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1341309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:44:05

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1341309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:44:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHE. 2012-02-17T19:32:50.80 10.0 undecidable manual Sg 0 0 0
IV.LNSS.HHN. 2012-02-17T19:32:50.05 0.3 undecidable manual Sg 212 16.7721 0.113 73
IV.SMA1.EHE. 2012-02-17T19:32:50.48 0.6 undecidable manual Sg 126 18.9699 -0.136 48
IV.NRCA.HHE. 2012-02-17T19:32:48.36 0.3 undecidable manual Sg 346 11.6772 -0.019 75
IV.SMA1.EHE. 2012-02-17T19:32:47.73 0.1 undecidable manual Pg 126 18.9699 0.12 97
IV.LNSS.HHN. 2012-02-17T19:32:47.07 0.1 undecidable manual Pg 212 16.7721 -0.145 97
IV.NRCA.HHE. 2012-02-17T19:32:46.34 0.1 undecidable manual Pg 346 11.6772 0.027 100
IV.ATCC.EHE. 2012-02-17T19:32:45.66 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download